The present invention relates to a spacer device for fixing a band between spinous processes, the spacer device comprising: a band unit which has a certain degree of tension and is disposed between a spinous process and an adjacent spinous process which protrude from the vertebrae, on the outer circumference of the spinous process and on the outer circumference of the adjacent spinous process so as to mutually fix the spinous process and the adjacent spinous process; and a spacer unit which is coupled to the band unit and is disposed in a space between the spinous process and the adjacent spinous process so as to fix the end of the band unit, wherein the spacer unit moves along the band unit from the outside of the body to the inside of the body in a state where the band unit penetrates the spacer unit, and thus the spacer unit is inserted into the space between the spinous process and the adjacent spinous process. Thereby, the spacer device can: efficiently and reliably fix the end of a band for mutually fixing adjacent spinous processes, while permitting fine motion during surgery for treatment of spinal diseases; acquire optimal procedure results and efficiently carry out surgical procedures regardless of skill due to a relatively inexpensive and simple configuration; take action in accordance with the body types of various patients; and provide a patient with a state identical to that of original vertebrae since a firmly fixed state can be maintained and, simultaneously, fine motion is permitted following a procedure.

A device and method for use which stabilizes a target motion segment of the spine without the use of screws or any form of hardware implanted into the vertebrae. By being comprised of modular segments and assembled onto the target motion segment at the time of implantation, it can be provided in kit form designed for each patient. The stabilization apparatus general comprises elements; one is adjustably secured to the posterolateral aspect of the caudal vertebra of the target motion segment, with another element being secured to the base of the spinous process of the cranial vertebra of the target motion segment. These two elements are then coupled to each other by either an elongated rod-like connecting element, or extensions from the two anchoring elements which then couple.

Bone anchor assemblies are disclosed herein that can provide for improved fixation as compared with traditional bone anchor assemblies. An exemplary assembly can include a bracket or wing that extends down from the receiver member and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a plate that is seated between the receiver member and the rod and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a hook that extends out from the receiver member to hook onto an anatomical structure or another implant to augment the fixation of the assembly's primary bone anchor. Surgical methods using the bone anchor assemblies described herein are also disclosed.

Devices and methods for enhancing the effectiveness of spinal stabilization, and particularly that of cervical spinal stabilization, are provided herein. More specifically, methods and systems are disclosed for effectively positioning occipital plates and spinal fixation assemblies within target vertebrae, while also reducing any associated patient trauma (e.g., muscle stripping, tissue damage, etc.). The systems and methods can utilize trans-lamina delivery of the spinal fixation assemblies to allow for the positioning of the fixation elements along the midline of the patient's spine.

An interspinous fusion device for holding adjacent spinous processes of a spine of a patient in a fixed configuration, including: a first plate configured to engage one side of the adjacent spinous processes; a second plate configured to engage another side of the adjacent spinous processes opposite the one side of the adjacent spinous processes; and a spacer disposed between and coupling the first plate to the second plate, wherein the spacer allows one or more of the first plate and the second plate to pivot relative to the other plate in a first unlocked configuration and prevents one or more of the first plate and the second plate from pivoting relative to the other plate in a second locked configuration. Each of the first plate and the second plate includes a pair of opposed wing members protruding from a central bore.

The present invention generally relates to methods and device for treatment of spinal deformity, wherein at least one tether is utilized to maintain the distance between the spine and the an ilium to (1) prevent increase in abnormal spinal curvature, (2) slow progression of abnormal curvature, or (3) impose at least one corrective displacement and/or rotation.

The present invention generally relates to methods and device for treatment of spinal deformity, wherein at least one tether is utilized to maintain the distance between the spine and the an ilium to (1) prevent increase in abnormal spinal curvature, (2) slow progression of abnormal curvature, or (3) impose at least one corrective displacement and/or rotation.

The present invention discloses an interspinous process fusion device, a method of fabricating the interspinous process fusion device, and a surgical method for maintaining a space between two spinous processes in a spine of a patient using the fusion device. The interspinous process fusion device including a distal tip member, a middle plate, a proximal plate, an elongate member, and a plurality of movable wings. The elongate member having a first end, a second end, and a longitudinal axis extending between the first and second end. The distal tip member is connected to the first end of the elongate member, the proximal plate is connected to the second end of the elongate member, and the middle plate and plurality of wings are positioned intermediate the distal tip member and the proximal plate along the longitudinal axis to form the interspinous process fusion device assembly.

A bone screw having a screw member possessing a threaded section and a head and a receiving part at the head end for receiving a rod to be connected to the bone screw is provided. The receiving part has on open first bore and a substantially U-shaped cross-section having two free legs provided with a thread. Furthermore, the receiving part has a second bore on the end opposite to the first bore whose diameter is greater than that of the threaded section and smaller than that of the head. On the bottom of the first bore a seat for the head is provided. In order that the screw member can be pivoted to at least one side by an enlarged angle, the edge bounding the free end of the second bore viewed relative to the axis of the first bore is of asymmetric construction.

An adjustable spinal stabilization system for maintaining preselected spacing and movement between adjacent vertebrae in a spinal column and for providing overall stability thereto. The system includes at least one interlaminar member positioned in the spaces intermediate a first vertebra and the vertebrae positioned immediately above or immediately below and adjacent to the first vertebra. The interlaminar member is operatively connected to an adjustable support structure and cooperates therewith to maintain the preselected spacing between adjacent vertebrae and to provide overall stability to the spinal column.